jan crawford is in boston, where the republican nominee spoke to his supporters. jan, good morning. >> reporter: well, good morning, charlie. good morning, norah. romney actually waited about an hour to concede after ohio was projected to go for the president. that, of course, being the must-win state. everyone knew at that point the race was basically over, but the campaign wanted to see some of those actual votes come in, just to make sure. and then of course, advisers tell me once they saw colorado go for the president, they knew that was it, so governor romney picked up the phone and called the president. >> this election is over, but our principles endure. i believe that the principles upon which this nation was founded are the only sure guide to a resurgent economy and to renewed greatness. >> reporter: a defeated mitt romney was gracious. >> i believe in america. i believe in the people of america. >> reporter: after running for president for 17 months, his campaign came up empty. >> like so many of you, paul and i have left everything on the field. we have